Improvement in cooking-stoves



nous or softcoal. r

Fig. 4' is a cross-section of the stove.

UNITED STATES PATENT Unnron.

SAMUEL ri'nnon, on Bosron, MASSACHUSETTS.-

IMPROVEMENT IN OOOK-ING-ISTOVES.

Specification forming part of Letters Patent No. 112,377, dated March 7,1871.

To all whom it may concern:

Be it known that I, SAMUEL PIERCE, of Boston, in the county of Suffolkand State of Massachusetts, have invented-a new and usei'ul Improvementin (looking-Stoves, of which the following, when taken in connectionwith theaccompanyin g drawing, is a full and exact specification.

Nature and Objects of the Invention.

voir and a bridge to separate this from the gas-combustion chamberbehind it, in combination with the main fi e-chamber and with back andbottom grates adapted to cause an active combustion of the fuel at therear part. Thispart ofmy invention is especially,though not exclusively,valuable for burning bitumi- Third, in a feedingchamber and a" registerin the upper part thereof, combined with the fire-box, as hereinafterdescribed.

. sketch of a stove embodying my invention. Fig. 2 is a longitudinalsection of the same.

Fig. 3 is a sketch of a portion of the inside of the stove, showing theposition of the ash-pan and flanges, the grates, thewater-bridge, &c.Fig 5 is a plan of the spit and its surroundings.

a a are sliding plates,(each with its cover l 00,) sliding back underthe reservoir S when desired. This is intended as a convenience inkeeping the fire for a length of time, the method being to close alldrafts and to push back the sliding plates a a as faras may bedesirable. This is much better than the old method of leaving the coverspartly off, as they are liable to fall back into place, and do not openin the best position. The water-reservoir S affords a convenient placebeneath it for the reception of the plates at a.

m is the ash-pan, exactly beneath the grate,

sliding in andout by means of grooves n, in

closed in the stove and concealed by the lower door.

' Upon either side of and behind the ash-pan m are flanges z, projectingover the sides and back of the ash-pan, guiding the ashes and cindersinto the ash-pan m. These flanges z effectually prevent any dirt orashes from falling outside the pan.

0 is the oven. 19 is a roasting-spit, resting in the shelf 4", andsuspended over the pan g, which is hung from books upon the shelf 1".That part of the spit 1a which rests in the shelf 1 is squareshaped, andis fitted 'into' the shelf r, so that the spit is kept firm in its placeand cannot turn less than a quarter round.

w is the fire-box. f is the fire-brick, and g is a grate behind thefire.

I am aware that a grate has been arranged to take the place entirely ofthe fire-brick behind the fire. Such an arrangement would be fatal to mypurpose. My grate extends about one-half the distance up from the lowergrate, It. I thus obtain a draft from behind the lower part of the fire,the direction of the draft beingfrom the rear to the front. To admit airat the upper part of the fire, as would be the case with an entire backof grate, would neutralize the effect entirely.

his the lower grate, hinged at the back '1',

and held in place by means ofthe rod 6. To

"let the grate it down, the rod tis drawn out,

and the grate swings down in the direction indicated by the dotted linesin Fig. 2.

n is the feeding or coking chamber. 0 is a plate, formin g a portion ofthe front of the firebox w and extending up to the feeding-chainber n. dis'the plate which forms the back of the feeding-chamber n and dividesit from the fire-box w. e is a water-bridge attached to the rear side ofthe dividing-plate d. It is the pipe leading to the bridge 6. opening atthe top of the stove into the feeding-chamber n. Q7 is a register in thefeeddoor I), through which air may be obtained.

In practical operation the bituminous coal is placedjin the feeding-chamber n through the feed-door b, and as fast as may be neces ary ispushed into the fire-box 10. While the b is, the feed-door,

the bed of coal in the fire-box w, and are for the most part consumed.To insure a more perfect combustion of the smoke and gases, air may belet in through the register 1; to meet the gases over the burning coalsin the fire-box 20. By this means a more perfect combustion of the smokeand gases is obtained, and the great objections to bituminous or softcoal are removed.

I consider this arrangement as the most practical method ever known ofcombining a feeding-chamber with a fire-box.

Of course, anthracite or hard coal may be used in this stove, and theadvantage of a feeding-chamber, as well as soft coal.

By means of the peculiar shape of the firebox to the grate h can be letdown and the cinders removed Without disturbing the fire. The plate 0and grates h and y can be all one piece and one casting, if desired.

When using the grate g the grate h may be dispensed with entirely, anda' solid bottom inserted, without seriously injuringthe draft.

The above-described arrangement of thefeeding-chamber and fire-box canbe applied to boilers or any other like heating apparatus.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. The sliding plates at a, when arranged to slide under the reservoirS, as and for the purposes hereinbefore described.

2. The combination of the coking or fuel chamber a, the fire-chamber w,the hinge or deflecting plate d, the inclined or curved front plate, 0,the rear grate, g, and the bottom grate, h, all constructed and arrangedto operate as and for the purposes set forth.

3. The combination and arrangement of the fire-box w, feeding-chamber u,and register 4), all constructed and arranged as and for the purposeshereinbefore set forth.

SAMUEL PIERCE.

Witnesses:

WILLIAMZ T. MORLEY, HENRY W. WILLIAMs.

